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Class Information
Number: 250/227.22
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > With light chopping or modulation > Keyboard or other manual switch controlled
Description: Subject matter in which the means to operate the light gate or modulator is a manually operable switch or keyboard.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7439484 |
Laser measurement apparatus using self-mixing effect |
Oct. 21, 2008 |
| 7355164 |
Touch-sensitive momentary-contact switch and control device having the momentary-contact switch |
Apr. 8, 2008 |
| 7161137 |
Optical transducer system having light emitting elements and light detecting elements both regulable in output characteristics |
Jan. 9, 2007 |
| 7132643 |
Optical transducer having optical modulator in the vicinity of rotational axis of moving object and musical instrument using the same |
Nov. 7, 2006 |
| 7053360 |
Capacitive type control member having a touch sensitive detector |
May. 30, 2006 |
| 7049576 |
Keyboard musical instrument having easily installable optical position transducer with coupler for coupling optical modulator to moving object |
May. 23, 2006 |
| 7015458 |
High density fiber optic output interface and system |
Mar. 21, 2006 |
| 6975783 |
Switch control with light beams |
Dec. 13, 2005 |
| 6946980 |
Input device |
Sep. 20, 2005 |
| 6933435 |
Easily installable optical position transducer and keyboard musical instrument having the same |
Aug. 23, 2005 |
| 6876482 |
MEMS device having contact and standoff bumps and related methods |
Apr. 5, 2005 |
| 6870151 |
Shutter, optical sensor system using the same and shutter holder incorporated therein |
Mar. 22, 2005 |
| 6804427 |
Optical switch |
Oct. 12, 2004 |
| 6803559 |
Optically controlled MEM switches |
Oct. 12, 2004 |
| 6765193 |
Optical touch switch structures |
Jul. 20, 2004 |
| 6747402 |
EL element lighting unit employing the same EL element |
Jun. 8, 2004 |
| 6741189 |
Keypad having optical waveguides |
May. 25, 2004 |
| 6740864 |
Method and apparatus for monitoring optical switches and cross-connects |
May. 25, 2004 |
| 6639205 |
Optically controlled MEM switches |
Oct. 28, 2003 |
| 6610974 |
Positioning a movable reflector in an optical switch |
Aug. 26, 2003 |
| 6556149 |
Switches and joysticks using a non-electrical deformable pressure sensor |
Apr. 29, 2003 |
| 6519381 |
Optical switch and method of producing the same |
Feb. 11, 2003 |
| 6420642 |
Automatic player incorporated in keyboard musical instrument and plunger sensor for detecting motion of plunger |
Jul. 16, 2002 |
| 6331704 |
Hydraulic fluid contamination monitor |
Dec. 18, 2001 |
| 6329647 |
Compensation reference circuit for opto-mechanical joystick |
Dec. 11, 2001 |
| 6285022 |
Front accessible optical beam switch |
Sep. 4, 2001 |
| 6252235 |
Apparatus for imaging fluorescent particles |
Jun. 26, 2001 |
| 6222179 |
Fiber optic control having joystick |
Apr. 24, 2001 |
| 6130424 |
Fiber optic control with positive mechanical drive from joy stick |
Oct. 10, 2000 |
| 6127678 |
Adjustable sensor assembly for printers |
Oct. 3, 2000 |
| 6097025 |
Light detection device having an optical-path switching mechanism |
Aug. 1, 2000 |
| 6046730 |
Backlighting scheme for a multimedia terminal keypad |
Apr. 4, 2000 |
| 5973318 |
Proximity switch system for electronic equipment |
Oct. 26, 1999 |
| 5909028 |
Position transducer and positional information processing system using the same |
Jun. 1, 1999 |
| 5811791 |
Method and apparatus for providing a vehicle entertainment control system having an override control switch |
Sep. 22, 1998 |
| 5696863 |
Distributed fiber optic temperature sensors and systems |
Dec. 9, 1997 |
| 5677688 |
Optomechanical information entry device |
Oct. 14, 1997 |
| 5539201 |
Multiple channel driver for fiber optic coupled sensors and switches |
Jul. 23, 1996 |
| 5499313 |
Distributed and spatially averaged fiber optic temperature sensors and method using same |
Mar. 12, 1996 |
| 5471359 |
Polyphase current monitor and control system |
Nov. 28, 1995 |
| 5457757 |
Optical control panel |
Oct. 10, 1995 |
| 5430261 |
Switch assembly including sequential switch rocker/lever operating mechanism |
Jul. 4, 1995 |
| 5422493 |
Asynchronous bidirectional node switch |
Jun. 6, 1995 |
| 5410150 |
Fiber optic controller with an interface having an emitting diode and a photodetector |
Apr. 25, 1995 |
| 5363463 |
Remote sensing of physical variables with fiber optic systems |
Nov. 8, 1994 |
| 5347123 |
Optical control switch device having a plurality of light receptors |
Sep. 13, 1994 |
| 5266949 |
Lighted electronic keyboard |
Nov. 30, 1993 |
| 5175780 |
Optical fiber switch |
Dec. 29, 1992 |
| 5138141 |
Method and apparatus for repeating the output of an optical scanner |
Aug. 11, 1992 |
| 5090791 |
Self-illuminated fibre optic switch |
Feb. 25, 1992 |
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